GORE® Microwave Coaxial Assemblies For High Flex Life Applications

United States


The combination of flexible ePTFE dielectric and helically wrapped shields provides GORE Microwave Coaxial Cable Assemblies with significant mechanical and electrical advantages, including extreme flexibility. A Gore assembly offers little resistance to bending and very low springback, since the helically wrapped shield increases in length on the outside of the bend and decreases on the inside of the bend. During bending or flexure, the foil does not open or allow EMI leakage unless the recommended minimum bend radius is substantially exceeded. Stranded center conductors and special jacketing materials further enhance the cable's flexibility and low springback in some cable versions. GORE Microwave Coaxial Assemblies are easy to install, and they retain their routing under conditions of shock and vibration.

Tailor-made solutions

With sizes ranging from 0.047 to 0.190 in., Gore has a wide selection of microwave coaxial-assembly options designed to meet your system requirements. Gore assemblies balance loss, weight, limpness, and ruggedization. They provide superior phase stability with temperature changes and can be specified as phase-matched sets or with a predetermined phase length. If a standard product does not meet your needs, we can customize a product for your application.

Durability by design

Our microwave coaxial assemblies are rigorously tested before, during, and after application of flex-life environments. Our understanding of failure modes and mechanisms associated with performance degradation and failure allows us to establish and document an expected assembly flex life. For many applications, we can save you time and money with previously qualified constructions.

The engineered advantage

We engineer high-flex microwave assemblies from the inner conductor out. Starting with the inherent high-flex properties of ePTFE dielectric material, we select conductor and jacket materials using an extensive material characterization database. Special cable-construction procedures and connectors ensure consistent microwave performance during flexure. We integrate these methods and materials to deliver a reproducible high-flex life microwave assembly.

Several versions available

Many cable configurations are available to fit your applications. While cables may differ in appearance due to the level of ruggedization used, the low or ultra-low insertion loss of our standard cable types is retained, and the same insertion loss and VSWR guarantees apply.

For harsh thermal environments, the predictable phase performance of ePTFE dielectric ensures accurate, repeatable performance.

The table below lists attributes for several Gore products.

  Gore assembly type Flex application Min. bend radius Nominal OD Low torque Typical loss (dB/ft at 18 GHz)
Standard construction G1
G2
G3
Low (*)
Low-med (*)
Low (*)
0.5 in
1.0 in
1.5 in
0.12 in
0.19 in
0.29 in
N
N
N
0.70
0.42
0.29
High-flex construction 4T
2T
2R
High (*)
Med-high (*)
High (*)
0.5 in
0.5 in
1.0 in
0.09 in
0.12 in
0.19 in
Y
Y
N
0.91
0.70
0.42

 

(*) Relative flex life

Multiple connector options

Most connectors available for our basic cable types may be selected for use with our high-flex-life cable.

Digital vs. Microwave

As data rates in digital equipment increase, the worlds of microwave and digital designers are beginning to converge. Traditional twisted pair, twin-ax, or triaxial solutions cannot support the higher data rates, so designers are turning to RF solutions. Gore has extensive experience with digital and differential signal applications.